services

Stormwater Engineering

Stormwater design is one of those quiet disciplines — when it's done right, nobody notices. When it's done wrong, you notice very quickly. Our stormwater team delivers drainage, detention and treatment designs that meet council and catchment authority requirements, and perform reliably through real-world weather events.

What we design

Roof and above-ground drainage

  • Conventional rainwater systems
  • Siphonic rainwater systems
  • Roof gutter and sump sizing

On-site detention and quality

  • On-site detention (OSD) systems
  • Stormwater quality control systems
  • DRAINS modelling
  • MUSIC modelling (WSUD compliance)

Ground-level drainage

  • In-ground stormwater and subsoil drainage systems
  • Surface water and stormwater drainage systems
  • Stormwater pump-out wells and systems
WSUD and council compliance

Water Sensitive Urban Design is now standard practice across most NSW councils.

We deliver MUSIC modelling and WSUD documentation that meets local targets for pollutant reduction, and we integrate treatment measures — bioretention, rainwater harvesting, gross pollutant traps — into site planning from early-stage design.
Why our stormwater design stands out
Stormwater interacts with landscape, structure, civil works and every other service running through the ground. We coordinate early with architects and civil consultants so that detention tanks, drainage lines and pump wells fit the site — not the other way around.
Contact us

Planning a development that needs OSD, WSUD or a full stormwater strategy? Get in touch.

Our professional engineering team are fully accredited practitioners. We offer certified design packages for each engineering discipline, including expert design submissions to the NSW Fair Trading Design & Building Practitioners Portal. At JREG, compliance isn't a checkbox—it’s our standard.
Servicing the Central Coast, Sydney, Newcastle and beyond.

Get in touch at info@jreg.com.au

© JR Engineering Group,
All Rights Reserved

This web experience has been brought to you by OBSERVED

Our professional engineering team are fully accredited practitioners. We offer certified design packages for each engineering discipline, including expert design submissions to the NSW Fair Trading Design & Building Practitioners Portal. At JREG, compliance isn't a checkbox—it’s our standard.
Servicing the Central Coast, Sydney, Newcastle and beyond.

Get in touch at info@jreg.com.au

© JR Engineering Group,
All Rights Reserved

This web experience has been brought to you by OBSERVED